等截面弹性管中一维非定常气流的变分原理

Variational Principles for One-Dimension Unsteady Flow in a Elastic Tube with Constant Cross-Section

本文根据等截面弹性管中一维非定常可压缩均熵流动的连续方程，定义了一个迹函数并通过坐标变换，在映象平面上建立了变分原理．

Variational principles for one-dimensional unsteady compressible instropic flow problem in a elastic tube with const. cross-section are constructed in the image plane (,), where is the path function which automatically satisfies the conservation of mass.